This online slot has an interesting layout of 6 reels and 4 rows and features 20 non-adjustable paylines. To select your total bet, use the total bet section. In this case, we have a list of twelve options, with 0.1 being the minimum and 100 being the maximum stake per spin. Players can expect a maximum theoretical return value of 96.25%.
Eleven pay symbols are used, which, from low to high, are four rocky objects, a medal, a pincer-type thing, a ray gun, a robot, an explorer, an alien, and a glowing-eyed Mystery Martian character. There's a neat retro-futuristic thing going on with the symbols; a sort of Lost in Space meets Futurama. Landing six rocks pays 5x the bet, the next six symbols are worth 15 to 100 times the bet for six of a kind, while the top Mystery Martian symbol is worth 500x the bet for six-of-a-kind.
Another important tile is the Wild Moon symbol. For one, Wild Moons substitute for all other symbols except the Mystery Stack symbol. It lands on all reels and has the same value as the highest-paying symbol. In addition, landing 3, 4, 5, or 6 Wild Moon symbols awards 8, 10, 12, or 14 free spins, respectively.